Cleaning device for feed-water heaters.



T. v. ELLIOTT. CLEANING DEVICE FOB FEED WATER. HEATERS.

APPLICATION FILED MAY 1, 1905. BENEWED MAR. 13, 1908.

Patented Nov. 3, 1908.

WITNESSES;

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THADDIOUS V. ELLIOTT, OF NEW YORK, N. Y., ASSIGNOR TO MARIEA ELLIOTT,

OF FLATBUSH, NEW YORK.

CLEANING DEVICE FOR FEED-WATER HEATERS.

Specification or" Letters Patent.

Patented Nov. 3, 1908.

Application filed May 1, 1905, Serial No. 258,271. Renewed March 13,1908. Serial No. 420,803.

To all whom it may concern:

Be it known that I, THADDIoUs V. ELLIOTT, a citizen of the UnitedStates,vand a resident of the city of New York, Flatbush, borough ofBrooklyn, in the county of Kings and State of New York, have invented anew and Improved Cleaning Device for FeediVater Heaters, of which thefollowing is a full, clear, and exact description.

The object of the invention is to provide a new and improved cleaningdevice, more especially designed for effectively cleaning feed waterheaters whenever desired, without requiring shutting off the feed waterfrom the boiler.

The invention consists of novel features and parts and combinations ofthe same, as will be more fully described hereinafter and then pointedout in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate correspondingl parts in all theviews.

Figure l is a side elevation of the improvement as applied, the furnacebeing' shown in longitudinal section, on the line l-1 of Fig. 2; Fig. 2is a front elevation of the same, partly in section, on the line 2-2 ofFig. l; F ig. 3 is an enlarged sectional. side elevation of theimprovement, on the line 3 3 of Fig. at; Fig. l is a transverse sectionof the same, on the line l--ll of Fig. 3; and Fig. 5 is a sectional planview of the same, on the line of Fig. 3. i

The feed water heater, as shown in the drawings, is arranged in theheating chamber A of the boiler B, set in the usual brickwork O of thefurnace, and the said feed water heater is preferably made in twosections, one on each side of the heating chamber A, the sectionsextending longitudinally in the furnace so as not to interfere with thewater-box and other parts of the furnace. Each section of the feed waterheater is formed of horizontally disposed tubular members D, D and D2,located one above the other and preferably rectangular in cross section,as indicated in Figs. 2 and 4l. The sections D and D are connected witheach other by vertical pipes D3 and similar'pipes D1t connect thesections D and D2 with each other, and the forward end of the section Dis connected with a water supply pipe E extending through the front wallof the furnace to the outside thereof to connect with a suitable watersupply.

The several sections D, D and D2 are connected by pipes F, F and F2 witha pipe F3 leading into the water compartment of the boiler B, so as todischarge the heated feed water into the said boiler from the saidsections D, D and D2.

In order to subject the feed water in the feed water heater to the samepressure as that of the steam in the boiler, the several sections D, Dand D2 are connected by pipes G, G and G2 with a pipe G2 leading intothe top or steam compartment of the boiler B. The inner end of thesection D is connected by a pipe H, having a check valve H, with ablow-off pipe H2 leading from the bottom of the boiler B to a dischargepipe H2, having a valve H4 which, when opened, allows the discharge ofthe water and steam contained in the boiler B. The forward end of thelower section D2 of the feed water heater forms the mud drum and isprovided with a` blow-off pipe l having a valve I.

In order to allow of periodically cleaning the interior surfaces of thesections D, D and the pipes D3, D4, without interrupting the properworking of the feed water heater, the following cleaning device isprovided:

ln the middle section D of the feed water heater are arrangedlongitudinally extending bars J and J spaced a suitable distance apartand extending at their forward ends through a portion of the supply pipeE and through asuitable stuffing box K to the outside of the furnace,the outer ends of the said bars J and J being connected with hand leversL and L, fulcrumed on links L2, pivoted on brackets L3 attached to thepipe E. By the opera-tor takinghold with both hands of the hand levers Land L and swinging the same in opposite directions, a longitudinalsliding motion is given to the bars J and J in opposite directions. Thebars J and J within the section D, are provided with spaced scrapers J2and J 3, in engagement with the inner surface of the section D, and thesaid scrapers are placed suitable distances apart so that when the barsJ and J are moved longitudinally in opposite directions, the saidscrapers scrape the entire inner surface of the section D, the slidingmovement given to each bar being somewhat in excess of one-half thedistance between adjacent sides of the Scrapers J2 and J 3. The scraperbars J and J are provided at their inner surfaces with racks J 4 and J 5arranged in the bars and in mesh with opposite sides of pinions N,having cross-shaped hubs N, extending at their upper ends into the lowerpart of the corresponding connecting tube D3;

and the lower end of the said hub N extends into the connecting tube D4,between the sections D and D2. 0n both ends of each hub N are securedScrapers 0 and O, of which the scraper O extends to the top of the tubeD3 and the scraper O extends to the lower end of the tube D4. Each ofthe Scrapers 0 and G is `in the shape of a flat bar in contact at itsside edges with the inner surface of the corresponding tube D3 or Dt,and when the bars J and J receive a sliding motion in oppositedirections, as previously explained, then the corresponding pairs ofracks J t, J 5 rotate the pinions N, so that a rotary motion is given tothe Scrapers and O', to turn the same completely around in the tubes Dgand D4 and scrape the inner surfaces thereof.

A scraper bar P extends lengthwise in the upper section D of the feedwater heater and on this scraper bar P are secured Scrapers P', similarto the Scrapers J 3 and in contact with the inner surface of the sectionD. The scraper bar P extends its forward end through a pipe D5 passingthrough the front wall of the briclrwork C, and the outer end of thesaid scraper bar l? also passes through a stuffing box K held on theterminal of the pipe Di. ii lever )2 is pivotally connected with theouter end of the scraper bar l), and this lever P2 is fulcrumed on alink P3, pivoted to a bracket P4 attached to the pipe DS Dy the operatorimparting a Swinging motion to this lever P2, the bar P is movedlengthwise in the section D and consequently its Scrapers P scrape Atheinner surface of the said sectionV D. rllhe material scraped off theinner surface of the section D is carried by the Scrapers D to the tubesD3, through which the said material can fall down and through thesection D and tube D4, to finally reach the mud-drum section D2, and ina like manner the material scraped off in the tubes Drs flows down tothe muddrum, and likewise the material scraped in the section D and thetubes D4 finally passes into the mud-drum section D2. rEhe latter isblown off from time to time by the operator opening the valve l', todischarge the sediment or scraped-off material by way of the pipe l to asuitable place of discharge.

From the'foregoing it will be seen that the cleaning device forms apermanent fixture of the feed water heater and can be actuated from timeto time by the operator, to scrape off any material that may havecollected on the inner surfaces of the sections and pipes of the feedwater heater, and the scraped-off material can be finally removed fromthe mud-drum section D2 into which it passes by opening the valve l fromtime to time, as previously mentioned.

The sections D and D and pipes D3, D4 are made sufficiently large toreadily accommodate the members of the cleaning device, so as to providesuilicient space for the amount of feed water required for properlyfeeding the boiler B.

Having thus described my invention, I claim as new and desire to secureby Letters Patent: Y'

1. The combination witha feed water heater comprising communicatinghorizontal and vertical members of a cleaning device therefor,comprising longitudinal bars spaced apart and extending within ahorizontal member of the feed water heater, Scrapers attached to thebars, a pair of hand levers connected with the outer ends YoftheV barsto move the same lengthwise in opposite directions, raclrs attached tothe bars and arranged in pairs, shafts in the vertical members of theheater, and extending vintoV the horizontal member, pinions secured tothe shafts and in mesh on opposite sides with the racks, andlongitudinally disposed Scrapers on the Shafts within the verticalmembers.

2. rlhe combination with va feed water heater, comprising communicatinghorizontal and vertical members, of a cleaning deviceY therefor,comprising longitudinal bars spaced: apart and extending within ahorizontal Y member of the feed water heater, Scrapers attached to thebars, a pair of hand levers con- V nected with the outer ends of thebars to. move the same lengthwise in opposite directions, shafts in thevertical members extending into the horizontal member, Vlongitudinallydisposed ScrapersV on theY shafts, and means whereby the movement of thebars may rotate theV Shafts.k

3. The combination with a feed `water heater comprising vertical andlongitudinal members of a cleaning device permanently Y arranged withinthe members, comprising reciprocating Scrapers in thehorizontal-members, rotary Scrapers in the vertical members', meanswhereby to reciprocate the first namedV scrap'ers, and means whereby.the reciproca- 115 tion of the said Scrapers may rotat`ethe Scrapers inthe vertical members. p

4. The combination'with a feed water heater, comprising communicatingvertical and horizontal members, of reciprocating Scrapers in thevhorizontal `members,. rotary Y sera-pers in the vertical members, andmeans for simultaneously actuating all the Scrapers.

ln testimony whereof l have signed my name to this specification 'inthepresenceof 1,25

